GPS / Bluetooth for NX

Hi,
is there any compatible GPS Bluetooth adapter for NX?

I know of the ED-GPS10 GPS, it's just that i also own Nikon DSLR and want to buy a solution which works on both (and future) systems.
What I am searching for is something like this:

http://www.enjoyyourcamera.com/Geotagging-GPS/Bluetooth-Geotagger-AOKA-AK-N90-fuer-GPS-faehige-Nikon-MC-DC2::3532.html
just for NX.

I realise that I need an extra GPS-receiver, that this is just an adapter, still it would be cheaper, especially in respect of future cameras with incompatible plugs.

That the hotshoe (at least on Nikon) remains free is also a plus in my opinion.

Is there something like this?